The global spin alignment of vector mesons is a powerful probe to study the vorticity field of the system produced in noncentral relativistic heavy-ion collisions. However, the experimental correction of the global spin alignment observable remains a longstanding issue. In this study, we propose a method to correct for the effect of finite pseudorapidity coverage when extracting the azimuthal dependence of spin alignment parameter ρ00. The potentially existing intrinsic spin alignment effects are taken into consideration together with the acce...
